EP0737912A2 - Optisches Aufzeichnungsmedium - Google Patents

Optisches Aufzeichnungsmedium Download PDF

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Publication number
EP0737912A2
EP0737912A2 EP96104547A EP96104547A EP0737912A2 EP 0737912 A2 EP0737912 A2 EP 0737912A2 EP 96104547 A EP96104547 A EP 96104547A EP 96104547 A EP96104547 A EP 96104547A EP 0737912 A2 EP0737912 A2 EP 0737912A2
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EP
European Patent Office
Prior art keywords
data
region
recording medium
softwares
recorded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96104547A
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English (en)
French (fr)
Other versions
EP0737912A3 (de
Inventor
Kazuo Nakashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
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Fujitsu Ltd
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Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of EP0737912A2 publication Critical patent/EP0737912A2/de
Publication of EP0737912A3 publication Critical patent/EP0737912A3/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/901—Indexing; Data structures therefor; Storage structures
    • G06F16/9017—Indexing; Data structures therefor; Storage structures using directory or table look-up
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1254—Formatting, e.g. arrangement of data block or words on the record carriers on discs for mixed data, i.e. continuous and discontinuous data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F2003/0697—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers device management, e.g. handlers, drivers, I/O schedulers

Definitions

  • the present invention relates to a recording medium such as an optical recording medium or a phase-change type optical disc which is suitable for storage of a large volume of data such as video data or audio data and an access control system using the same.
  • CD-ROMs have been widely employed as media for storing large volumes of data such as video data or audio data.
  • a CD-ROM is a medium comprising a transparent plastic layer, a metallic film, and a protective film. Pits (cavities) are formed in the plastic layer to thereby record data therein, the metallic film (e.g., aluminum) is formed on the pit surface by sputtering or deposition, and the protective film is provided thereover.
  • the metallic film e.g., aluminum
  • CD-ROM since data are recorded as pits, loss of data is less likely to occur compared to magnetic recording or the like. Further, since the data are fixed, accidental rewriting thereof can be prevented. Furthermore, a large number of CD-ROMs can be easily and inexpensively produced by stamping.
  • CD-ROMs stored with a large number of programs, pictures, sounds, etc. have recently been spreading.
  • a system wherein, in order to improve the selectability of data within a CD-ROM, menus regarding all the data within it are registered beforehand in a rewritable hard disc on the computers and, by designating a menu ICON, starting of a desired program or reproduction of data are enabled.
  • a CD-ROM has a capacity of 500 megabytes and, if the programs are relatively short, can accommodate several hundreds of programs therein.
  • an ordinary user uses only several programs from within a single CD-ROM. Therefore, it is complex that all the programs within a CD-ROM are always kept selectable from menus presented by the CD-ROM and that, in addition, such selectability has compelled a user to roll up or down menu screens until a desired menu appears.
  • the present invention has been achieved in view of the above-mentioned problems and an object thereof is, when reading out menu information recorded in a large-capacity data recording medium such as, for example, a magneto-optical disc or the like and displaying it on a menu screen of a user's system, to prevent menu ICONs unnecessary for a user from being displayed on the screen to thereby display only menus of a software necessary for him, thus to improve the user's ease of use.
  • a large-capacity data recording medium such as, for example, a magneto-optical disc or the like
  • an information recording medium such as a magneto-optical disc or the like is at least divided into a first region (RAM region) enabling data reading and writing, and a second region (ROM region) exclusively used for data reading.
  • RAM region enabling data reading and writing
  • ROM region a second region exclusively used for data reading.
  • the first region there is recorded a title managing information table (301) in which filenames constituting softwares stored in the second region are registered in software units in correspondence with loaders for executing or reproducing the files while, on the other hand, in the second region there are recorded at least two softwares.
  • access to the softwares stored in the second region may be controlled by providing an address information table (302) in the first region.
  • Fig. 7 is a view for explaining data to be recorded in a magneto-optical disc medium 101 of the present invention.
  • Reference numeral 101 denotes a magneto-optical disc medium which has a partial ROM structure. It comprises a rewritable RAM region 212' and a ROM region 213' wherein recording data are recorded as pits by stamping.
  • the magneto-optical disc medium 101 has a volume structure wherein each of the RAM and ROM regions has one section in accordance with ECMA-167 (ISO-DIS 13356).
  • 211-1 is a system area
  • 211-2 is a logic format discriminator area
  • 211-3 is a boot area
  • 211-4 is a section table area
  • 212 is a first section.
  • 213 is a second section (program register section).
  • the first section 212 is formatted in accordance with, for example, ISO9293 (MS-DOS) and is recorded with a conventional CD-ROM utilizing tool 212a, CD-ROM emulator 212b, and various tables 212c.
  • ISO9293 MS-DOS
  • the second section 213 is previously recorded with software data such as video data, audio data, programs, etc. as pits (cavities) in accordance with ISO9660 (CD-ROM logic format) by stamping.
  • software data such as video data, audio data, programs, etc. as pits (cavities) in accordance with ISO9660 (CD-ROM logic format) by stamping.
  • the conventional CD-ROM utilizing tool 212a is an application for utilizing conventional software data having an IO9660 format, and video reproduction loaders, audio reproduction loaders, etc. are prepared therefor.
  • the CD-ROM emulator 212b is an application for converting a CD-ROM access request (reading command) issued from the conventional CD-ROM utilizing tool to a magneto-optical disc access request.
  • This application has a magneto-optical disc BIOS made up in accordance with MS-DOS.
  • the sequential order, location, and the like in which the conventional CD-ROM utilizing tool 212a and CD-ROM emulator 212b are recorded can be arbitrarily determined and it is sufficient if each of them can be recognized as a file in accordance with ISO9293.
  • the remaining areas other than the areas where the CD-ROM emulator 212b, the conventional CD-ROM utilizing tool 212a and the various tables 212c are registered are utilized as working areas 212d.
  • Figs. 8A and 8B are conceptual views for explaining data blocks (sectors) of a CD-ROM and a magneto-optical disc.
  • Fig. 8A illustrates the format of a data block in a CD-ROM while, on the other hand, Fig. 8B illustrates the format of a data block in a 3.5-inch magneto-optical disc which is determined in accordance with the ISO standard.
  • 275 represents 1 data block of CD-ROM which has a synchronization signal area 275a, an ID area 275b and a data area 275c.
  • the synchronization signal area 275a is recorded with a synchronization signal for correctly reproducing successive data.
  • the ID area 275b is recorded with data (address data) which identifies the location of the data block.
  • the data area 275c is composed of a 2048-byte user data area 275c-1 and a 288-byte error correction information area 275c-2 for detection and correction of errors.
  • reference numeral 276 represents 1 data block in a magneto-optical disc which has a header area 276a and a data area 276b.
  • the header area 276a there are recorded a synchronization signal and an ID (address data) identifying the location of this data block.
  • the data area 276b is composed of a 512-byte user data area 276b-1 and an error correction area 276b2.
  • the data size of 1 block in CD-ROM is 2048 bytes which is four times as large as the data size of 1 block in a magneto-optical disc. Accordingly, data (2048 bytes) of 1 block in CD-ROM can be divided into four parts each having a data size of 512 bytes and data of these four parts can be recorded as 4 blocks in a magneto-optical disc.
  • Fig. 9 is a view for explaining storage of data in the second section 213 (ROM region) of a 3.5-inch magneto-optical disc.
  • Reference numeral 11a denotes a 3.5-inch magneto-optical disc which has the second partition 213 on the disc.
  • Reference numeral 281 denotes a CD-ROM.
  • the user data area of 1 data block in the CD-ROM 281 has a data size of 2048 bytes while, on the other hand, the user data area of 1 data block in the 3.5-inch magneto-optical disc 211a has a data size of 512 bytes.
  • the user data of 1 data block 275 in the CD-ROM 281 is divided into four parts and data of these four parts are respectively recorded as four data blocks 276-1 to 276-4 on the 3.5-inch magneto-optical disc 211a.
  • the user data of each data block in the CD-ROM 281 is divided into four parts and data of these four parts are respectively recorded as four data blocks on the 3.5-inch magneto-optical disc 211a.
  • the data block numbers of the four data blocks in the 3.5-inch magneto-optical disc 211a in which there are recorded data the same as the data of the (x)th data block in the CD-ROM 281 are A + 4 ⁇ x , A + (4 ⁇ x + 1) , A + (4 ⁇ x + 2) , A + (4 ⁇ x + 3) . Note that in these numbers, ( ⁇ ) means multiplication.
  • Fig. 10 is a view for explaining storage of data into the second section 213 of a 5-inch magneto-optical disc.
  • Reference numeral 211b denotes a 5-inch magneto-optical disc.
  • the user data area of 1 data block has a data size of 512 bytes or 1024 bytes. According to the ISO standard, two data sizes of 512 bytes and 1024 bytes are recognized as for the user data area in a 5-inch magneto-optical disc.
  • the user data of 1 data block 275 in a CD-ROM 281 is divided into two parts and data of these two parts are respectively recorded as two data blocks 276-1 and 276-2 in the 5-inch magneto-optical disc 211 b.
  • the data block numbers of two data blocks in the 5-inch magneto-optical disc in which there are recorded data the same as the data of the (x)th data block in the CD-ROM 281 are A + 2 ⁇ x , A + (2 ⁇ x + 1) .
  • the title managing information table 301 has a structure as illustrated in Fig. 11. Namely, the titles, filenames, and loader names of various softwares (application programs A to E) are described in corresponding relation to each other.
  • the application softwares A and B are each of an execution file type as defined with an expander of "EXE" and, when each of these application softwares is started up from WINDOWS, the use of a corresponding EXE software execution loader becomes necessary.
  • the application software C is video data as defined with an expander of "AVI" and, when this software is reproduced, the use of a video display loader such as a multimedia player on WINDOWS becomes necessary.
  • the application softwares D and E are each audio data as defined with an expander of "WAV" and, when each of these softwares is reproduced, the use of an audio reproduction loader becomes necessary.
  • This title managing information table 301 is reflected on a menu of the CD-ROM as it is. As illustrated in Fig. 16, when a menu program 214 registered in the second section 213 is started up, reference is had to the title managing information table 301 in the first section 212, whereby the menu program 214 displays only the title softwares registered in the table 301.
  • this title managing information table 301 is registered in the readable/writable first section 212. That is, the title managing information table 301 is rewritable. Therefore, by previously omitting information data regarding files unnecessary for a user, menu screen data can be reconstructed in conformity with a user's convenience.
  • the title managing information table 301 thus reconstructed is illustrated in Fig. 12.
  • the application programs B and D are deleted from the table of Fig. 11.
  • initial data 215 of the title managing information table 301 registered in the first section 212 are registered in the second section 213.
  • the initial data 215 of the title managing information are data (initial data) for preserving a state of the title managing information table prior to performance of user's deletion and alteration.
  • a user wishes to restore the title managing information table to an initial state thereof, he can read out the title managing information initial data 215 in the first section 213 and rewrite the title managing information table 301 in the first section 212, thereby restoring this title managing information table 301 to the initial state thereof (the state wherein all the application softwares are registered).
  • addresses of demonstration programs 304 are registered as addresses for accessing the programs, as illustrated in Fig. 15.
  • the address information table 302 has a construction as illustrated in Fig. 13. Namely, filenames, foremost address numbers corresponding thereto, and record lengths are registered in corresponding relation to each other.
  • an address "123" is set with respect to both the demonstration program 304 and a real program 305. Actually, this address "123" is a registered address of the demonstration program 304. Accordingly, even when a user attempts to read out the real program 305 of the program A according to the above-mentioned title managing information table 301, he actually reads out the demonstration program.
  • the above-mentioned address information table 302 is effective for handling of programs in the case where, for example, as illustrated in Fig. 15, the demonstration programs 304 and the real programs 305 are registered in the second partition 213 as a ROM region.
  • the real program 305 is a program which is executable in a complete form without being functionally limited while, on the other hand, the demonstration program 304 is a demonstration program in which only part of the function of the corresponding real program is realized.
  • a method of this payment may be a method of entry of money into a bank account or the like with respect to a managing center where the programs are managed, or a method of payment in cash directly made with respect to a sales store or the like.
  • the managing center or sales store which has confirmed receipt of money with regard to the program A notifies an enciphered code to the user by telephone or orally.
  • the user inputs this code notified by the managing center via a keyboard 217 connected to the relevant software reproduction apparatus 105, whereby the address information table 302 of the magneto-optical disc 101 is rewritten.
  • the enciphered code which has been input via the keyboard 217 is converted to an address rewriting command by a control CPU 4 or 10 functioning as a code/address conversion section 216, with the result that the address information table 302 is rewritten.
  • Fig. 14 illustrates the address information table 302 after the same has been rewritten.
  • the address of the real program of the program A is rewritten from "123" to "456". Accordingly, after the execution of this rewriting operation, when the user has designated the program A, he becomes able to access not the demonstration program 304 but the real program 305.
  • a charge may be subtracted from the value of the remainder in the charge imposing information storing section 8 when performing payment thereof.
  • Fig. 2 is a functional block diagram illustrating the construction of a software reproduction apparatus used in the present embodiment.
  • the part (SD circuit 3) enclosed by a broken line in this figure represents a software managing module 102 of the present invention.
  • This software managing module 102 may be of a type permanently attached within the software reproduction apparatus in the form of a board or card, or may be an IC card removably mounted within a card slot (e.g., a card slot in accordance with PCMCIA) of the software reproduction apparatus.
  • the software managing module 102 is usually employed for decoding of an encoded software or for managing of money charging. However, in the present embodiment, it is not indispensable, as described later.
  • reference numeral 1 denotes a demodulation circuit/control circuit which has a function of demodulating video/audio data under MPEG standard stored in the megneto-optical disc 101 and supplying them to a decoder/encoder 2.
  • the demodulation circuit 1, decoder/encoder 2 and magneto-optical disc drive 223 are composed as a magneto-optical disc unit (a portion enclosed by a broken line in the figure).
  • these video and audio data are registered as software data in the second partition 213 which is the ROM region of the megneto-optical disc 101.
  • a user requests to start up a given application (e.g., application program A) in accordance with the title managing information table 301 he has rewritten by himself.
  • the CD-ROM emulator 212b is first accessed.
  • this CD-ROM emulator 212b has a function of altering an access request for CD-ROM to an access request for the magneto-optical disc 101. From the control CPU 4 (or control CPU 10), access can be had thereto as in the case of an ordinary CD-ROM.
  • the decoder/encoder 2 executes error correction and bit rearrangement and thereby outputs programs or video/audio data (code data) in an amount of 2 megabytes/sec at max. (1 megabyte/sec on average), to the SD circuit 3.
  • video and audio data (code data) received by an I/O (input section 5) are decoded by a DES (Data Encryption Standard) 7 serving as a decoding section 103 and then are output them to a demultiplexer 13 outside the SD circuit 3 by way of an I/O (6: output section 109).
  • the demultiplexer 13 separates these data into audio data and video data and outputs to an MPEG processing section (MPEG-2).
  • MPEG processing section MPEG-2 has a function of expanding video/audio data under MPEG standard the data compression of which has been performed.
  • VRC synchronization control section
  • control CPU 10 within the software reproduction apparatus 105 and the control CPU 4 within the SD circuit 3, each of which serves as a permission control section
  • control CPU 4 within the SD circuit 3 may be substituted for by the control CPU 10.
  • the magneto-optical disc unit, the SD circuit 3, the control CPU 10 and the like are connected to an external interface 11 to which there are connected a keyboard 217, a floppy disc drive 12, a MODEM 224 and the like.
  • the DES 7 of the present embodiment uses [46DATA ENCRYPTION STANDARD NIST] made by FIP'S PUB and the MPEG processing section uses [ISO/IEC CD 13818'1 to 3].
  • control CPU 4 functions as the permission control section and, when a software is selected from the above-mentioned menu program 214, refers to the charge imposing information storing section 8.
  • the software data
  • the CD-ROM 101 When a charge imposition remainder exists on this charge imposing information storing section 8, the software (data) are read from the CD-ROM 101 and sequentially decoded in the DES 7.
  • a prescribed amount of money as the remainder is registered in the charge imposing information storing section 8 and an amount of money imposed is subtracted therefrom in correspondence with an amount or time of decoding processing for the encoded softwares.
  • a user wishes to update the value of this remainder, he can bring to a sales store or the like the software managing module 102 provided as a card medium and pay a specified charge, and can thereby increase there the value of the remainder in the charge imposing information storing section 8.
  • Fig. 3 illustrates a schematic construction of the DES 7.
  • the DES 7 has a DES execution section 15 (realized by the control CPU 4). It has a function of decoding input data (IN) by means of keyboard informatin 16 and outputting it as output data (OUT).
  • the DES execution section 15 has a mode discrimination section 18 which has a function of selecting an optimum mode from among a plurality of DES modes according to the relevant data formation or the like and imparting it to the DES execution section 15.
  • Fig. 4A illustrates an ECB basic mode. This mode is that which, in the DES execution section 15, encodes (or decodes) a 64-bit input data array as a 64-bit output data array by means of 64-bit keyboard information 16.
  • Fig. 4B illustrates a CBC mode.
  • this mode after a 64-bit input data array is encoded (or decoded) in the DES execution section 15 by means of 64-bit keyboard information 16, the resulting data are fed back to the DES execution section 15. In this manner, feedback operations are repeated until inputting of all the data is completed, whereupon a final result is output.
  • This mode is suitable for data processing of files or the like.
  • Fig. 4C illustrates an OFB mode. This mode is suitable for processing communication data in which errors are liable to occur, or for processing audio data wherein one error greatly affects the rest of the data.
  • Fig. 4D illustrates a CFB mode. This mode is suitable for processing self-synchronizing type data.
  • the mode discrimination section 18 reads out an optimum mode from the above-mentioned modes stored in a mode table 20 and supplies it to the DES execution section 15.
  • the DES execution section 15 performs encoding and decoding processes according to the mode thus selected.
  • Fig. 5 is a block diagram illustrating a hardware structure of the DES execution section 15.
  • each register having an 8-bit configuration are connected thereto and a 64-bit shift register (input register 21: REG 1) is disposed as an input buffer.
  • selectors sel are allocated. Each selector can selectively input either an output from a DES processing main circuit 25 as described later or an output from the above-mentioned shift register 21.
  • registers 23 each having an 8-bit configuration are disposed and in the next stage thereto the DES processing main circuit 25 is disposed.
  • This DES processing main circuit 25 functions as the DES execution section 15. Namely, in the DES processing main circuit 25, various DES modes, explained in connection with Fig. 4, are registered as ROMs (Read Only Memories), whereby an optimum DES mode logic is selected by an instruction from the control CPU 4 and decoding processing is performed.
  • the output of the DES processing main circuit 25 is separated into the selectors sel and an output register 24 (REG 3) as an output buffer.
  • the output of the output register 24 (REG 3) is used as encoded or decoded data.
  • Fig. 6 illustrates the sequences of this process.
  • the output of the input register 21 is DES processed as an output from the register 23 by a first clock of the next cycle. And the resulting signal is output from the output register 24 by the next clock signal. At this outputting time from the output register 24, on the input side, reception of encoded data in the next cycle from the input register 21 is performed.
  • the input register 21 as an input buffer and the output register 24 as an output buffer
  • entry of encoded data and delivery of decoded data can be independently performed on a continuous basis.
  • higher decoding and encoding processing is possible compared to that performed by cyclic entry and delivery of data as in the case of conventional DES processing.
  • the SD circuit 3 is not indispensable but, when data are encoded in the magneto-optical disc 101, is effective particularly for a case where charging of a rate is performed in correspondence with the extent to which the coded data are reproduced.
  • addresses of the demonstration programs 304 are registered as addresses for accessing the programs as illustrated in Fig. 15.
  • addresses for the real programs 305 may be previously recorded in a zone separate from the zone of the first section 212 where the address information table 302 is registered, thereby reflecting addresses for the real programs 305 on the address information table 302 even after the title managing information table 301 has been rewritten.
  • addresses for the real programs 305 have been registered, addresses for the demonstration programs 304 may be left therein without erasing addresses for the demonstration programs 304, thereby enabling selective access to one of the two.
  • addresses for the real programs 305 may be previously encoded as in the case of the softwares so that these encoded addresses can be read out using licensed encoding keyboard information, thereby enabling a user to rewrite these addresses thus read out.
  • the decoding keyboard information can be obtained from a MODEM 224 via the SD module 102 and telephone/telecommunication lines.
  • the software recorded in the data recording medium of the present embodiment may be any formation of data such as program data, video data, audio data, text data, dictionary data, etc.
  • the title managing information table in a readable and writable region of the magneto-optical disc and registering in this title managing information table only software titles of software which the user needs to use, it is possible, for example, to prevent unnecessary menu ICONs from overflowing in a screen of menus output from the magneto-optical disc, thereby enabling quick and efficient start-up of software titles of softwares which the user needs to use.
EP96104547A 1995-04-12 1996-03-21 Optisches Aufzeichnungsmedium Withdrawn EP0737912A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7087264A JPH08287653A (ja) 1995-04-12 1995-04-12 光記録媒体
JP87264/95 1995-04-12

Publications (2)

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EP0737912A2 true EP0737912A2 (de) 1996-10-16
EP0737912A3 EP0737912A3 (de) 2006-08-23

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EP96104547A Withdrawn EP0737912A3 (de) 1995-04-12 1996-03-21 Optisches Aufzeichnungsmedium

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US (1) US5835589A (de)
EP (1) EP0737912A3 (de)
JP (1) JPH08287653A (de)
KR (1) KR100301954B1 (de)

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EP1139209A1 (de) * 2000-03-25 2001-10-04 Deutsche Thomson-Brandt Gmbh Speichermedium mit verschiedenen Speicherbereichen für verschiedene Verarbeitungsformen
EP1139344A2 (de) * 2000-03-25 2001-10-04 Deutsche Thomson-Brandt Gmbh Datenspeichermeidum mit unterschiedlichen Formaten mit einem gemeinsamen Teil
WO2006031050A2 (en) * 2004-09-13 2006-03-23 Lg Electronics Inc. Recording medium, and method and apparatus for reproducing data from the recording medium
US7599611B2 (en) 2004-09-13 2009-10-06 Lg Electronics Co. Recording medium, and method and apparatus of reproducing data recorded on the same
US7609939B2 (en) 2004-08-17 2009-10-27 Lg Electronics Inc. Method and apparatus of reproducing data recorded on recording medium and local storage
US7609945B2 (en) 2004-08-17 2009-10-27 Lg Electronics Inc. Recording medium, and method and apparatus for reproducing data from the recording medium
US7613384B2 (en) 2004-08-17 2009-11-03 Lg Electronics Inc. Method for configuring composite file structure for data reproduction, and method and apparatus for reproducing data using the composite file structure
US7725010B2 (en) 2004-08-17 2010-05-25 Lg Electronics, Inc. Method and apparatus of reproducing data recorded on recording medium and local storage
US7761422B2 (en) 2005-01-07 2010-07-20 Lg Electronics, Inc. Method and apparatus for reproducing data from recording medium using local storage
US7764866B2 (en) 2004-12-10 2010-07-27 Lg Electronics, Inc. Recording medium, method for searching for content data from the recording medium, and method and apparatus for reproducing data from the recording medium
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JPH08287653A (ja) 1996-11-01
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US5835589A (en) 1998-11-10
KR100301954B1 (ko) 2001-10-22

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